如何自定义MyBatis拦截器更改表名

package top.emanjusaka.springboottest.mybatis.plugin;
import org.apache.ibatis.executor.statement.StatementHandler;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.plugin.Intercepts;
import org.apache.ibatis.plugin.Invocation;
import org.apache.ibatis.plugin.Signature;
import org.apache.ibatis.reflection.DefaultReflectorFactory;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.SystemMetaObject;
import top.emanjusaka.springboottest.mybatis.annotation.DBTableStrategy;
import java.lang.reflect.Field;
import java.sql.Connection;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
 * @Author emanjusaka
 * @Date 2023/10/18 17:25
 * @Version 1.0
 */
@Intercepts({@Signature(type = StatementHandler.class, method = "prepare", args = {Connection.class, Integer.class})})
public class DynamicMybatisPlugin implements Interceptor {
    private Pattern pattern = Pattern.compile("(from|into|update)[\\s]{1,}(\\w{1,})", Pattern.CASE_INSENSITIVE);
    @Override
    public Object intercept(Invocation invocation) throws Throwable {
        StatementHandler statementHandler = (StatementHandler) invocation.getTarget();
        MetaObject metaObject = MetaObject.forObject(statementHandler, SystemMetaObject.DEFAULT_OBJECT_FACTORY, SystemMetaObject.DEFAULT_OBJECT_WRAPPER_FACTORY, new DefaultReflectorFactory());
        MappedStatement mappedStatement = (MappedStatement) metaObject.getValue("delegate.mappedStatement");
        // 获取自定义注解判断是否进行分表操作
        String id = mappedStatement.getId();
        String className = id.substring(0, id.lastIndexOf("."));
        Class<?> clazz = Class.forName(className);
        DBTableStrategy dbTableStrategy = clazz.getAnnotation(DBTableStrategy.class);
        if (null == dbTableStrategy || !dbTableStrategy.changeTable() || null == dbTableStrategy.tbIdx()) {
            return invocation.proceed();
        }
        // 获取SQL
        BoundSql boundSql = statementHandler.getBoundSql();
        String sql = boundSql.getSql();
        // 替换SQL表名
        Matcher matcher = pattern.matcher(sql);
        String tableName = null;
        if (matcher.find()) {
            tableName = matcher.group().trim();
        }
        assert null != tableName;
        String replaceSql = matcher.replaceAll(tableName + "_" + dbTableStrategy.tbIdx());
        // 通过反射修改SQL语句
        Field field = boundSql.getClass().getDeclaredField("sql");
        field.setAccessible(true);
        field.set(boundSql, replaceSql);
        field.setAccessible(false);
        return invocation.proceed();
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="top.emanjusaka.springboottest.score.repository.IScoreRepository">
    <select id="selectAll" resultType="top.emanjusaka.springboottest.score.model.vo.ScoreVO">
        select * from score
    </select>
</mapper>

package top.emanjusaka.springboottest.score.repository;
import org.apache.ibatis.annotations.Mapper;
import top.emanjusaka.springboottest.mybatis.annotation.DBTableStrategy;
import top.emanjusaka.springboottest.score.model.vo.ScoreVO;
import java.util.List;
/**
 * @Author emanjusaka
 * @Date 2023/10/18 17:45
 * @Version 1.0
 */
@Mapper
@DBTableStrategy(changeTable = true,tbIdx = "2")
public interface IScoreRepository {
    List<ScoreVO> selectAll();
}

package top.emanjusaka.springboottest;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import top.emanjusaka.springboottest.score.model.vo.ScoreVO;
import top.emanjusaka.springboottest.score.service.IScore;
import javax.annotation.Resource;
import java.util.List;
@SpringBootTest
class SpringBootTestApplicationTests {
    @Resource
    private IScore score;
    @Test
    void contextLoads() {
        List<ScoreVO> list = score.selectAll();
        list.forEach(System.out::println);
    }
}